| Acronym | Meaning |
| EHF | Extremely High Frequency |
| GMCC | Geophysical Monitoring For Climatic Change |
| ANEC | American Nuclear Energy Council |
| ELDO | European Launcher Development Organization |
| SETA | Satellite Electrostatic Triaxial Accelerometer |
| CAI | Computer-aided Instruction |
| KB | Kilobyte (s) |
| DMSP | Defense Meteorological Satellite Program |
| IFEOS | International Forum On Earth Observations Using Space Station Elements |
| DOI | Department Of Interior |